Part demolition and replacement of existing buildings with a new two-storey building to connect the Grange and the Barn and alterations to existing buildings and landscaping across the site to create a new museum with a café and shop, whilst retaining offices and archive storage (additional and revised info received 14-16th August 2023).

Demolish swimming pool building, erect single storey extension, carry out alterations to house and conversion of outbuildings to office space and ancillary accommodation.